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[article]
Titre : |
Simultaneous assay of trace Cr(VI) and total chromium in tannery effluent. Using flow injection spectrophotometry with Ce(IV) as oxidant |
Type de document : |
texte imprimé |
Auteurs : |
Dai Shijun, Auteur ; Zhang Xinshen, Auteur ; Yu Lingyun, Auteur ; Xiao Kai, Auteur ; Tong Ling, Auteur ; Sun Dongmei, Auteur ; Tu Jie, Auteur |
Année de publication : |
2009 |
Article en page(s) : |
p. 245-249 |
Note générale : |
Bibliogr. |
Langues : |
Anglais (eng) |
Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
Résumé : |
A rapid and sensitive method is described for flow injection spectrophotometric determination of trace Cr(VI) and total chromium in tannery effluent. The method is based upon the classical reaction of Cr(VI) with diphenylcarbazide (DPC) to form a water-soluble complex (lambda max=540nm). Cr(III) reacts with DPC only after its on-line oxidation to Cr(VI) by Ce(SO4). Under the optimized conditions, the calibration curves were linear over the range 5-100µg 1-1 and 2à -200 µg 1-1 for Cr(VI) and total chromium, respectively, while the precision close to the quantification limit was satisfactory in both cases (Sr=0.49 % for Cr(VI) and 0.94 % for total chromium (n=10) at the same level, 50µg 1-1, respectively). the application of the method to the analysis of tannery effluent gave accurate results based on recovery studies (98.7-103.3 %). Analytical results of total chromium tannery effluent were in good agreement with that of reference method. |
En ligne : |
https://drive.google.com/file/d/19oe3FnTy-paoZE_mXtezaJPqU4Sat55U/view?usp=drive [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7347 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 6 (11-12/2009) . - p. 245-249
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